Ultimately, the high level dragon monsters used for Cyberdark Dragon in this deck comes down to the duelist's taste. If he or she wants to play it safe, then the aforementioned dragons can be used. If the duelist enjoys the Red-Eyes Black Dragon or Blue-Eyes White Dragon cards, they splash in very well. If the duelist wants to use a lot of Synchro Monster, then this deck can be easily geared towards powerful Synchro Dragons as well. Factors in deciding this depend on whether the deck is Dragon or Machine focused, and Fusion or Synchro focused.